/*
 * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
 *           (C) 2000 Antti Koivisto (koivisto@kde.org)
 *           (C) 2000 Dirk Mueller (mueller@kde.org)
 * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#ifndef SKY_ENGINE_CORE_RENDERING_STYLE_STYLEIMAGE_H_
#define SKY_ENGINE_CORE_RENDERING_STYLE_STYLEIMAGE_H_

#include "flutter/sky/engine/platform/geometry/IntSize.h"
#include "flutter/sky/engine/platform/geometry/LayoutSize.h"
#include "flutter/sky/engine/platform/graphics/Image.h"
#include "flutter/sky/engine/wtf/PassRefPtr.h"
#include "flutter/sky/engine/wtf/RefCounted.h"
#include "flutter/sky/engine/wtf/RefPtr.h"

namespace blink {

class RenderObject;

typedef void* WrappedImagePtr;

class StyleImage : public RefCounted<StyleImage> {
 public:
  virtual ~StyleImage() {}

  bool operator==(const StyleImage& other) const {
    return data() == other.data();
  }

  virtual bool canRender(const RenderObject&) const { return true; }
  virtual bool isLoaded() const { return true; }
  virtual bool errorOccurred() const { return false; }
  virtual LayoutSize imageSize(const RenderObject*) const = 0;
  virtual void computeIntrinsicDimensions(const RenderObject*,
                                          Length& intrinsicWidth,
                                          Length& intrinsicHeight,
                                          FloatSize& intrinsicRatio) = 0;
  virtual bool imageHasRelativeWidth() const = 0;
  virtual bool imageHasRelativeHeight() const = 0;
  virtual bool usesImageContainerSize() const = 0;
  virtual void setContainerSizeForRenderer(const RenderObject*,
                                           const IntSize&) = 0;
  virtual void addClient(RenderObject*) = 0;
  virtual void removeClient(RenderObject*) = 0;
  virtual PassRefPtr<Image> image(RenderObject*, const IntSize&) const = 0;
  virtual WrappedImagePtr data() const = 0;
  virtual float imageScaleFactor() const { return 1; }
  virtual bool knownToBeOpaque(const RenderObject*) const = 0;

  ALWAYS_INLINE bool isPendingImage() const { return m_isPendingImage; }
  ALWAYS_INLINE bool isGeneratedImage() const { return m_isGeneratedImage; }

 protected:
  StyleImage() : m_isPendingImage(false), m_isGeneratedImage(false) {}
  bool m_isPendingImage : 1;
  bool m_isGeneratedImage : 1;
};

#define DEFINE_STYLE_IMAGE_TYPE_CASTS(thisType, function)                   \
  DEFINE_TYPE_CASTS(thisType, StyleImage, styleImage, styleImage->function, \
                    styleImage.function);                                   \
  inline thisType* to##thisType(const RefPtr<StyleImage>& styleImage) {     \
    return to##thisType(styleImage.get());                                  \
  }                                                                         \
  typedef int NeedsSemiColonAfterDefineStyleImageTypeCasts

}  // namespace blink
#endif  // SKY_ENGINE_CORE_RENDERING_STYLE_STYLEIMAGE_H_
